Performance study of multiple link failure restorability of shared protection trees

In this paper we examine multiple failure restorability performance of self-repairing shared trees for local link restoration in unicast mesh networks. We demonstrate how these shared hierarchical protection trees could be utilized to effectively handle multiple consecutive link failures with minimal reconfiguration. We evaluate the restorability performance using simulation of random graphs and present the results of second- and third-failure restorability as well as the required redundancy to achieve various restorability targets.